CODEWITHSUNDEEP
javaandroidlistviewandroid-listviewandroid-arrayadapter
eashdroidian
eashdroidian

Reputation: 33

Content in Listview is invisible

I am new to Android and I am currently developing an app that contains a listview with simple text. When the user clicks the text in the listview a sharing intent is triggered. I have used a custom adapter to set a different typeface to the text in my listview. The problem is when I run the app the listview is being seen but the content is invisible. But When I tap on the listview the sharing intent is triggered as it should be. I don't know what is causing it. I searched in Stack Overflow and google and tried some steps but it didn't work out for me. Please help me out. Thanks in advance.

Code:

Main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.proda.technologies.app.testapp"
android:background="@drawable/inspirationalbg">

<ImageButton
    android:layout_width="130dp"
    android:layout_height="40dp"
    android:id="@+id/back_Button"
    android:background="@drawable/backbutton"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

<ListView
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:id="@+id/list"
    android:layout_below="@+id/back_Button"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

</RelativeLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">

<TextView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:textColor="#ffffff"
    android:id="@+id/instView"/>

</LinearLayout>

CustomAdapter.java

 public class CustomAdapter extends ArrayAdapter<String>{
private final Context context;
private final String[] values;


public CustomAdapter(Context context, String[] values) {
    super(context,R.layout.list_item,values);
    this.context = context;
    this.values = values;

}

@Override
public View getView(int position, View view, ViewGroup parent) {
    LayoutInflater inflater = LayoutInflater.from(context);
   View rview = inflater.inflate(R.layout.list_item,null);
    TextView txt = (TextView)rview.findViewById(R.id.instView);
    AssetManager mgr = context.getAssets();
    Typeface tf = Typeface.createFromAsset(mgr,"fonts/RalewayRegular.ttf");
    txt.setTypeface(tf);
    return rview;
}


}

Main.java

String[] phone = {"Nexus","Htc","Samsung","Oppo","Apple"};
Listview inslist;
inslist = (ListView)findViewById(R.id.list);
CustomAdapter adapter = new CustomAdapter(Main.this,phone);
inslist.setAdapter(adapter);

I am not getting any errors. I can see the listview with the lines seperating each content. But the actual content(text) is invisible. Please help me

Upvotes: 1

Views: 236

Answers (2)

ThaiPD
ThaiPD

Reputation: 3751

Your ListViewItem contain a TextView but its value was not init. Try to set value for textView in xml file or in java code. Try one of below ways:

1. By XML file: list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">

<TextView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:textColor="#ffffff"
    android:id="@+id/instView"
    android:text="This is text sample"/>

</LinearLayout>

2. by Java code: CustomAdapter.java

public class CustomAdapter extends ArrayAdapter<String>{
private final Context context;
private final String[] values;


public CustomAdapter(Context context, String[] values) {
    super(context,R.layout.list_item,values);
    this.context = context;
    this.values = values;

}

@Override
public View getView(int position, View view, ViewGroup parent) {
    LayoutInflater inflater = LayoutInflater.from(context);
   View rview = inflater.inflate(R.layout.list_item,null);
    TextView txt = (TextView)rview.findViewById(R.id.instView);
    txt.setText(values[position]);
    AssetManager mgr = context.getAssets();
    Typeface tf = Typeface.createFromAsset(mgr,"fonts/RalewayRegular.ttf");
    txt.setTypeface(tf);
    return rview;
}


}

Upvotes: 3

Ranjit
Ranjit

Reputation: 5150

I didn't see anywhere that you added text inside TextView.

Can you put the data to show in TextView view inside getView() method like :

txt.setText(values.get(position));

Upvotes: 1

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